2112, great advice on the 3.73 rear end. When I was looking for a truck in September, I found the 3.73 was rated for 9900 I think, and the 3.55 (which I ended up buying) was rated for 7700. I bought the 3.55 because that's what was available at the time, and I don't tow very often with this truck (but will use it as a toad soon) - but I'd have rather had the 3.73 just in case I do tow more in the future. They just weren't as easy to find at that time.
Also, I bought the 5.0 and have been pleased with it for everyday driving although I did like the performance of the Eco. I saved almost $2000 buying the 5.0 since Ford had better incentives on that engine than the Eco. Also, my salesman had an Eco and traded his own for a 5.0 - not because of any turbo problem, but because he said he just never got the mileage he expected and he didn't want to spend the extra money on the next truck. He doesn't tow, either.
I sure liked the idea of the Eco, but it seems like it's kinda like having a diesel in some respects - if you use it for towing, it's worth it for the performance; otherwise, the V8 will do just fine for the majority of us. Plus, I really like the sound of the 5.0.
